8172503494 has 4 divisors (see below), whose sum is σ = 12258755244. Its totient is φ = 4086251746.

The previous prime is 8172503453. The next prime is 8172503509. The reversal of 8172503494 is 4943052718.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×8172503494³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8172503494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043125872 + ... + 2043125875.

It is an arithmetic number, because the mean of its divisors is an integer number (3064688811).

Almost surely, 2^8172503494 is an apocalyptic number.

8172503494 is a deficient number, since it is larger than the sum of its proper divisors (4086251750).

8172503494 is a wasteful number, since it uses less digits than its factorization.

8172503494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086251749.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 8172503494 is about 90401.8998362313. The cubic root of 8172503494 is about 2014.2731869185.

The spelling of 8172503494 in words is "eight billion, one hundred seventy-two million, five hundred three thousand, four hundred ninety-four".